Explain the concepts of supply and demand within a market economy.​

Supply and demand, in economics, relationship between the quantity of a commodity that producers wish to sell at various prices and the quantity that consumers wish to buy. ... In equilibrium the quantity of a good supplied by producers equals the quantity demanded by consumers.

Explanation:

supply is how much of something the producer has made

demand is how much the consumer wants/needs the product

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a) he encouraged islamic schools to introduce greek texts.

d) he invited greek scholars to teach their texts to the locals.

explanation:

stating your point of the article